Answer:
0.524
Step-by-step explanation:
Answer:
<u>Friday, total earning:</u>
- (11 - 6)*$4.35 + $37.35 = $59.10
<u>Saturday, total earning:</u>
- (11 - 6)*$4.35 + $42.10 = $63.85
<u>Total for the two nights is:</u>
- $59.10 + $63.85 = $122.95
<u>Average per hour is:</u>
- $122.95/(5 + 5) = $122.95 / 10 = $12.30 (rounded)
Answer:
Re= 5*10^5
Step-by-step explanation:
The numbers are not totally clear as they repeat each other. Under this consideration I will assume the closest values according to the advertised.
r=0.5m
V=1m/s (or) V=11m/s
We know that Reynolds number is given by,
Or for the another velocity
Answer:
Step-by-step explanation:
This question can be solved by generating two equations
let V = the speed at which they are paddling and U = the speed of the stream
they paddle the canoe up stream which is 8 miles in 2 hrs
the speed = 8 miles / 2 h = 4 mi/hr
since it is upstream;
V - U = 4 mi / hr ....... (1)
downstream
V + U = 8 mi / hr ...... (2)
make U subject of the formula in equation 2
U = 8 mi /h - V
substitute in equation 1
V - ( 8 mi / hr - V ) = 4 mi/hr
2 V - 8 mi/hr = 4 mi/hr
2 V = 4 + 8 = 12 mi/hr
V = 12 / 2 = 6 mi / hr
to find how fast current was moving substitute the value of V into any of the equation
V - U = 4 mi/hr
6 mi/hr - U = 4 mi /hr
- U = 4 - 6 mi/hr = - 2 mi / hr
U = 2 mi/hr
The option 4 is the answer.
